The combination of "M-FOUR" and "M-FOUR DSP" creates a highly complete "smart audio system."

🎧 [M-FOUR × M-FOUR DSP] ​​The Benefits of the Combination 🔊 1. Compact yet configurable for flexible system expansion The M-FOUR DSP's built-in DSP amplifier functions perform adjustments and control, and adding an additional M-FOUR as a power amplifier achieves high output and multi-channel configuration. Installation space is still minimal, allowing for neat placement in the trunk or under a seat. 🎛️ 2. DSP-controlled, precise sound creation The M-FOUR DSP incorporates HELIX's proprietary high-resolution DSP technology. Time correction, equalization, crossover, time alignment, and more can be finely adjusted, and an additional M-FOUR amplifies the signal while maintaining high purity. The result: a sound with the perfect combination of positioning, clarity, and power.

⚙️ 3. Natural integration into factory systems
Both units support high-level inputs,
making them compatible with factory navigation systems and factory head units.
This is the ideal upgrade configuration that allows you to completely renew the sound without changing the exterior.

🧩 4. Flexible support for future expansion
It's easy to expand to a multi-amp configuration in the future, such as front + rear + subwoofer,
and allows for the creation of a seamless system complete within the HELIX brand.